Power mechanism for reciprocating plungers



(No Model.)

v G. MQCARN. POWER MECHANISM FOR REOIPROOATING PLUNGERS. No. 367,539. Patented Aug. 2, 1887.

.WITNBSSES INVENTOR Wax/ zfi ATTORNEYS.

N. PEYERS. Photo-\flhognphun Walhinghvn, o. a

UNITED STATES PATENT OFFICE.

GEORGE MOOARN, oE'eooDLANn, INDIANA.

POWER MECHANISM FOR RE CIPROCATING PLUNGERS.

SPECIFICATION forming part of Letters Patent No. 367,539, dated August 2,1887,

Application filed April 30, 1887.

Serial No. 23G,G54. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE MCGARN, of Goodland, in the county of Newton and State of Indiana, have invented a new and Improved Power Mechanism for Reciprocating Plungers, of which the following isa full, clear,and exactdescription.

This invention relates to a novel means of imparting a reciprocating motion to a plunger, the construction being applicable for use in connection with a hay or vegetable cutter or a hay-press, or for any other purpose where an intermittent compressiveforce is required.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar figuresof reference indicate corresponding parts in both the views.

Figure 1 is a plan view of a construction embodying my invention, the parts being rep resented as they appear when arranged in connection with a cutting apparatus; and Fig. 2

is a sectional view taken on w of Fig. 1.

In the drawings above referred to 10 represeats a drum or disk having one or more bosses or projections, 1l,which extend outward from the peripheral face of the disk, three of these bosses being preferably employed. To this the broken line 00 drum or disk 10, I connect asweep, 12. A pitman, 13, which is connected at one end to a plunger, 14:, is held against the peripheral face of the drum 10 by circular guides 15, which are concentric with the axis of the drum, the pitman 13 being provided with a pin, 16, which extends from either side of the pitmanhead and bears against the guides 15, the pitman resting between said guides.

A spring, 17, is connected to the pitman 13 by means of alink, 18, the arrangement being such that as the sweep is turned in the direction of the arrow shown in connection therewith in Fig. 1 the pitman will be forced to the position in which it is shown in dotted lines in said figure by one of the lugs. 11, that are carried by the drum or disk 10, and as such lug passes from engagement with the pitmanhead the spring 17 pitman to the position in Fig. 1.

From the above description it will be seen willact to return the which it is shown in that a reciprocating motion may be imparted to a plunger when such plunger is mounted in proper guides, and that the compressive force is brought to bear slowly and evenly upon the plunger, pletion of the full stroke of the plunger it will be quickly returned by the action of the spring.

but that immediately upon the com" In the application of my invention illustrated in the drawings 1 have represented the plunger as being provided with a knife, 2, the cutting-edge of which is arranged to be thrown against the cuttingedge of a knife, 3, that is. carried by a casing, 20, within which the plunger is mounted, the arrangement being such that by reciprocating the plunger and bringing the two knifeedges together the movement of the plunger may be utilized for the purpose of cutting hay, roots, or any other product. by a stop, 19, arranged as shown.

In the drawings 1 have represented the plunger-case and the disk 10 as being mounted upon a bed-plate, A; but the two parts might be mounted upon separate foundations pro vided the two foundations were rigidly connected.

In the ordinary operation of the apparatus described, a horse orother draft animalwould be connected to the sweep 12, and itwill of course be understood that the parts might be mounted so that the horse in his travels would cross over the pitman, or that the parts might be mounted so thatt-hehorse wouldpass beneath the pitman, in which latter case the disk or drum 10 would necessarily be mounted at the top of a vertical shaft, to the lower end of which shaft the sweep would be connected.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent-- i 1. The combination, with a plunger, of a pitman connected thereto, a disk or drum carrying stops that are arranged to bear against the pitman-head, guides that are concentric with the axis of the drum or disk, a pinor stop carried by the pitman and arranged to bear against the guides, a means for revolving the drum or disk, a spring, and a link connecting the spring and the pitman, substantially as described,

The throw of the spring is limited 2. The combination, carrying a knife, 2, vided with a knife,

disk 10, a spring, 17, and a link, 18, connecting the spring and the pitman, substantially I0 as described.

GEORGE MCCARN.

'itnesses:

MARION C. COOYER, DANIEL GRAY. 

